HOME  |  ARTICLESBAND CONDITIONS  |  EQUIPMENT  |  LINK  | MAIL   |  OPERATIONAL  |  PROJECTS

      HOME  > OPERATIONAL > SATELLITE DETAILS >
AMSAT-OSCAR 51 OPERATIONAL DETAILS
AMSAT-OSCAR 51 (AO51) Operational frequencies and other details

Spacecraft Summary NON OPERATIONAL

OSCAR Designation:  AMSAT-OSCAR 51     Oscar Number:  AO-51    
International Designator:  2004-025K     Norad Number:  28375    
Common Name:  Echo     Alternate Name:  OSCAR-E    
Satellite Type:  Microsatellite     Launch Date:  28 June, 2004    
Launch Location:  Baikonur Cosmodrome     Launch Vehicle:  Dnepr    
Apogee:  818.00     Perigee:  696.00    
Inclination:  99.97     Period:  99.97    
Dimensions:  ~25cm cube     Weight:  11.140 Kg    
Organization:  AMSAT-NA

Frequency Information

Mode V/U (J) FM Voice Repeater (QRP): Non-Operational
Uplink: 145.8800 MHz FM
Downlink 435.1500 MHz FM

 

 

See AMSAT for latest Operational OSCAR Satellite Status Summary
http://www.amsat.org/amsat-new/satellites/status.php

November 29, 2011

It is with a heavy heart I report that AO-51 has ceased transmission and is not responding to commands. The last telemetry data indicated that the third of six batteries was approaching failure to short, and observations indicate the voltage from three cells is insufficient to power the UHF transmitters. The IHU may continue to be operative. Initial tests with the S band transmitter were also not positive, although more attempts are in order. We have tried leaving the satellite in an expected state where if voltages climb high enough, the 435.150 transmitter may possibly be heard.

The command team will regularly attempt communications with the satellite over the coming months (and years). There is always the possibility that a cell will open and we could once again talk to our friend while illuminated. Thanks to all who helped fund, design, build, launch, command, and operate AO-51. It's 7 year mission has been extraordinary. Please support AMSAT's Fox-1 project, and other AMSAT projects worldwide with your time and money.

For the AO-51 Command Team,

73, Drew KO4MA
AMSAT-NA VP Operations

 

 

TOP OF PAGE

Page last revised 29 November 2011 
 

ACTIVITIES | ARTICLES | EQUIPMENT | HOMELINK | MAIL | PROJECTS

Web design by Peter Miles

All content may be used for unlimited distribution with credits.

This site has been designed to cater for 800 x 600 resolution.
Site is best viewed with Internet Explorer 5.5 or Netscape 6 or higher.